am e38ee9df: Merge "Add Debug.getRuntimeStat()." (04143fdd) · Commits · e / os / android_frameworks_base

core/java/android/os/Debug.java

+90 −0

Original line number	Diff line number	Diff line
		@@ -34,6 +34,7 @@ import java.lang.annotation.Target;
		import java.lang.annotation.ElementType;
		import java.lang.annotation.Retention;
		import java.lang.annotation.RetentionPolicy;
		import java.util.Map;

		import org.apache.harmony.dalvik.ddmc.Chunk;
		import org.apache.harmony.dalvik.ddmc.ChunkHandler;
		@@ -1034,6 +1035,95 @@ href="{@docRoot}guide/developing/tools/traceview.html">Traceview: A Graphical Lo
		VMDebug.resetAllocCount(VMDebug.KIND_ALL_COUNTS);
		}

		/**
		* Returns the value of a particular runtime statistic or {@code null} if no
		* such runtime statistic exists.
		*
		* <p>The following table lists the runtime statistics that the runtime supports.
		* Note runtime statistics may be added or removed in a future API level.</p>
		*
		* <table>
		* <thead>
		* <tr>
		* <th>Runtime statistic name</th>
		* <th>Meaning</th>
		* <th>Example</th>
		* <th>Supported (API Levels)</th>
		* </tr>
		* </thead>
		* <tbody>
		* <tr>
		* <td>art.gc.gc-count</td>
		* <td>The number of garbage collection runs.</td>
		* <td>{@code 164}</td>
		* <td>23</td>
		* </tr>
		* <tr>
		* <td>art.gc.gc-time</td>
		* <td>The total duration of garbage collection runs in ms.</td>
		* <td>{@code 62364}</td>
		* <td>23</td>
		* </tr>
		* <tr>
		* <td>art.gc.bytes-allocated</td>
		* <td>The total number of bytes that the application allocated.</td>
		* <td>{@code 1463948408}</td>
		* <td>23</td>
		* </tr>
		* <tr>
		* <td>art.gc.bytes-freed</td>
		* <td>The total number of bytes that garbage collection reclaimed.</td>
		* <td>{@code 1313493084}</td>
		* <td>23</td>
		* </tr>
		* <tr>
		* <td>art.gc.blocking-gc-count</td>
		* <td>The number of blocking garbage collection runs.</td>
		* <td>{@code 2}</td>
		* <td>23</td>
		* </tr>
		* <tr>
		* <td>art.gc.blocking-gc-time</td>
		* <td>The total duration of blocking garbage collection runs in ms.</td>
		* <td>{@code 804}</td>
		* <td>23</td>
		* </tr>
		* <tr>
		* <td>art.gc.gc-count-rate-histogram</td>
		* <td>The histogram of the number of garbage collection runs per 10 seconds.</td>
		* <td>{@code 0:34503,1:45350,2:11281,3:8088,4:43,5:8}</td>
		* <td>23</td>
		* </tr>
		* <tr>
		* <td>art.gc.blocking-gc-count-rate-histogram</td>
		* <td>The histogram of the number of garbage collection runs per 10 seconds.</td>
		* <td>{@code 0:99269,1:1,2:1}</td>
		* <td>23</td>
		* </tr>
		* </tbody>
		* </table>
		*
		* @param statName
		* the name of the runtime statistic to look up.
		* @return the value of the specified runtime statistic or {@code null} if the
		* runtime statistic doesn't exist.
		* @hide
		*/
		public static String getRuntimeStat(String statName) {
		return VMDebug.getRuntimeStat(statName);
		}

		/**
		* Returns a map of the names/values of the runtime statistics
		* that {@link #getRuntimeStat()} supports.
		*
		* @return a map of the names/values of the supported runtime statistics.
		* @hide
		*/
		public static Map<String, String> getRuntimeStats() {
		return VMDebug.getRuntimeStats();
		}

		/**
		* Returns the size of the native heap.
		* @return The size of the native heap in bytes.